working the aws-api makes me understand why there is an iteration function in the core library now.

basically i'm doing a lot of this:

(iteration (fn [token]
               (aws/invoke (aws/client {:api :codepipeline :region "us-east-2" :provider caws/provider})
                           {:op :ListPipelines :request {:nextToken token}}))
             :kf :nextToken
             :vf :pipelines)

  (take 3 pipe)
  ;; => ([{:name "cac-training-Pipeline-BATF3SECTRPT",
  ;;       :version 1,
  ;;       :created #inst "2022-10-21T04:16:15.000-00:00",
  ;;       :updated #inst "2022-10-21T04:16:15.000-00:00"}
  ;;      {:name
  ;;       "cacapi-training-DeploymentPipeline-1A5UTBE4M0MM0-Pipeline-1EK0CVNJQP4TL",
  ;;       :version 2,
  ;;       :created #inst "2022-10-21T03:46:36.000-00:00",
  ;;       :updated #inst "2022-10-21T20:21:33.000-00:00"}])